Perhaps you should try some spelling variations:
ho trieu » mot trieu, 30 trieu, ho chieu
25 trieu » 30 trieu
cuu nang » chuc nang, cam nang, cuu van
kha nang » phap nang, ky nang, ki nang
song tap » tong tap, song tam, cuong tap
tap toan » tap doan, tap quan, bai toan
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho trieu) or (25 trieu)) tinh - canh tranh ((cuu nang) or (kha nang)) song tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (25 trieu)) tinh - canh tranh ((cuu nang) OR (kha nang)) song tap toan cao.
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) or (25 trieu)) tinh - canh tranh ((cuu nang) or (kha nang)) song tap toan cao*.